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AK4646 Dataheets PDF



Part Number AK4646
Manufacturers Asahi Kasei Microsystems
Logo Asahi Kasei Microsystems
Description Stereo CODEC
Datasheet AK4646 DatasheetAK4646 Datasheet (PDF)

[AK4646] www.DataSheet4U.com AK4646 Stereo CODEC with MIC/SPK-AMP GENERAL DESCRIPTION The AK4646 features a stereo CODEC with a built-in Microphone-Amplifier and Speaker-Amplifier. Input circuits include a Microphone-Amplifier and an ALC (Auto Level Control) circuit, and Output circuits include a Speaker-Amplifier. These circuits are suitable for portable application with recording/playback function. The AK4646 is available in a 32pin QFN, utilizing less board space than competitive offerings. .

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[AK4646] www.DataSheet4U.com AK4646 Stereo CODEC with MIC/SPK-AMP GENERAL DESCRIPTION The AK4646 features a stereo CODEC with a built-in Microphone-Amplifier and Speaker-Amplifier. Input circuits include a Microphone-Amplifier and an ALC (Auto Level Control) circuit, and Output circuits include a Speaker-Amplifier. These circuits are suitable for portable application with recording/playback function. The AK4646 is available in a 32pin QFN, utilizing less board space than competitive offerings. FEATURES 1. Recording Function • Stereo Mic Input (Full-differential or Single-ended) • Stereo Line Input • MIC Amplifier (+32dB/+29dB/+26dB/+23dB/+20dB/+17dB/+10dB/0dB) • Digital ALC (Automatic Level Control) (+36dB ∼ −54dB, 0.375dB Step, Mute) • ADC Performance: S/(N+D): 83dB, DR, S/N: 86dB (MIC-Amp=+20dB) S/(N+D): 88dB, DR, S/N: 95dB (MIC-Amp=0dB) • Wind-noise Reduction Filter • 5 Band Notch Filter • Stereo Separation Emphasis 2. Playback Function • Digital De-emphasis Filter (tc=50/15μs, fs=32kHz, 44.1kHz, 48kHz) • Digital ALC (Automatic Level Control) (+36dB ∼ −54dB, 0.375dB Step, Mute) • Stereo Separation Emphasis • Stereo Line Output - Performance: S/(N+D): 88dB, S/N: 92dB • Mono Speaker-Amp - S/(N+D): 60dB@150mW, S/N: 90dB - BTL Output - Available for both Dynamic and Piezo Speaker - Output Power: 400mW@8Ω (SVDD=3.3V) • Analog Mixing: Mono Input 3. Power Management 4. Master Clock: (1) PLL Mode • Frequencies: 12MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin) 1fs (LRCK pin) 32fs or 64fs (BICK pin) (2) External Clock Mode • Frequencies: 256fs, 512fs or 1024fs (MCKI pin) 5. Output Master Clock Frequencies: 32fs/64fs/128fs/256fs MS0557-E-02 -1- 2007/05 [AK4646] www.DataSheet4U.com 6. Sampling Rate: • PLL Slave Mode (LRCK pin): 7.35kHz ∼ 48kHz • PLL Slave Mode (BICK pin): 7.35kHz ∼ 48kHz • PLL Slave Mode (MCKI pin): 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz • PLL Master Mode: 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz • EXT Slave Mode: 7.35kHz ∼ 48kHz (256fs), 7.35kHz ∼ 26kHz (512fs), 7.35kHz ∼ 13kHz (1024fs) 7. μP I/F: 3-wire Serial 8. Master/Slave mode 9. Audio Interface Format: MSB First, 2’s compliment • ADC: 16bit MSB justified, I2S • DAC: 16bit MSB justified, 16bit LSB justified, 16-24bit I2S 10. Ta = −30 ∼ 85°C 11. Power Supply: • AVDD: 2.2 ∼ 3.6V (typ. 3.3V) • DVDD: 1.6 ∼ 3.6V (typ. 3.3V) • SVDD: 2.2 ∼ 4.0 V (typ. 3.3V) 12. Power supply Current: 19mA 13. Package: 32pin QFN (5mm x 5mm, 0.5mm pitch) 14. Pin/Register Compatible with AK4642EN/AK4643EN ■ Block Diagram AVDD PMMP AVSS VCOM DVDD DVSS MPWR MIC Power Supply PMADL CSN Control Register CCLK CDTIO LIN1 Internal MIC RIN1 MIC-Amp LIN2 PMADR PMADL or PMADR PDN A/D HPF External MIC RIN2 PMADCL or PMADCR or PMDAC BICK HPF LRCK LPF Stereo Separation 5 Band EQ ALC SDTO Audio I/F SDTI PMLO LOUT Line Out ROUT PMDAC D/A DATT DEM SMUTE MCKO PLL MCKI VCOC PMSPK PMPLL SPP Speaker SPN PMBP SVDD SVSS MIN Figure 1. Block Diagram MS0557-E-02 -2- 2007/05 [AK4646] www.DataSheet4U.com ■ Ordering Guide AK4646EN AKD4646 −30 ∼ +85°C 32pin QFN (0.5mm pitch) Evaluation board for AK4646 ■ Pin Layout MCKO 18 SVDD SVSS 24 23 22 21 20 NC ROUT LOUT MIN RIN2 / IN2− LIN2 / IN2+ LIN1 / IN1− RIN1 / IN1+ 19 17 MCKI SPN SPP NC NC 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8 16 15 14 DVSS DVDD BICK LRCK SDTO SDTI CDTIO CCLK AK4646EN Top View 13 12 11 10 9 AVDD VCOC PDN NC MS0557-E-02 -3- MPWR VCOM AVSS CSN 2007/05 [AK4646] www.DataSheet4U.com ■ Comparison with AK4642/AK4643 1. Function Function AVDD DVDD Power Supply for SPK-Amp Output Voltage of MIC Power MIC-Amp HPF / LPF Notch filter ALC Recovery Operation Waiting Period Read of ALC Volume Output Volume AK4642 AK4643 2.6V ∼ 3.6V 2.6V ∼ 3.6V 2.6V ∼ 5.25V (HVDD) 0.75 x AVDD 0dB/+20dB/+26dB/+32dB 1 Step No 128/fs ∼ 1024/fs AK4646 2.2V ∼ 3.6V 1.6V ∼ 3.6V 2.2V ∼ 4.0V (SVDD) 0.8 x AVDD 0dB/+10dB/+17dB/+20dB/ +23dB/+26dB/+29dB/ +32dB HPF : 2 Step, LPF : 1 Step 5 Band 128/fs ∼ 16384/fs Yes +36dB ∼ -54dB, 0.375dB Step (Note 1) 0dB ∼ -18dB, 6dB Step No No No [email protected] 1 Mono 2 Stereo 6.33Vpp@SVDD=3.8V 3-Wire(Read/Write) No No 12MHz, 13.5MHz, 24MHz, 27MHz impossible to use ALC and Volume 128/fs ∼ 16384/fs No No +12dB ∼ -115dB, 0.5dB Step Headphone-Amp Yes Bass Boost Yes Receiver-Amp No Yes SPK-Amp Output Power [email protected] 1.2W@5V Analog Mixing 1 Mono 2 Stereo ADC Input Selector 2 Stereo 3 Stereo SPK-Amp Maximum Output 8.5Vpp@SVDD=5V Voltage for Piezo Speaker 3-Wire(Write only), I2C-Bus μP I/F Audio I/F Format DSP Mode No Yes EXT Master Mode No Yes Master Clock frequency for 11.2896MHz, 12MHz, 12.288MHz, 13.5MHz PLL Mode 24MHz, 27MHz Note 1. ALC and Volume circuits are shared by input and output. Therefore, it is function at same time for both recording and playback mode. MS0557-E-02 -4- 2007/05 [AK4646] www.DataSheet4U.com PIN/FUNCTION No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Pin Name MPWR VCOM .


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